31742945002 has 4 divisors (see below), whose sum is σ = 47614417506. Its totient is φ = 15871472500.

The previous prime is 31742944993. The next prime is 31742945009. The reversal of 31742945002 is 20054924713.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20054924713 = 733 ⋅27360061.

It can be written as a sum of positive squares in only one way, i.e., 24248406961 + 7494538041 = 155719^2 + 86571^2 .

It is a super-2 number, since 2×31742945002² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31742945009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7935736249 + ... + 7935736252.

Almost surely, 2^31742945002 is an apocalyptic number.

31742945002 is a deficient number, since it is larger than the sum of its proper divisors (15871472504).

31742945002 is a wasteful number, since it uses less digits than its factorization.

31742945002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15871472503.

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 31742945002 in words is "thirty-one billion, seven hundred forty-two million, nine hundred forty-five thousand, two".